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Transcript

Solution

Temperature

Dilution

Rate of Dissolution

Agitation

Surface Area

Concentration

7.6E- investigate and model how temperature, surface area, and agitation affect the rate of dissolution of solid solutes in aqueous solutions.
7.6C- distinguish between physical and chemical changes in matter
7.6D- describe aqueous solutions in terms of solute and solvent, concentration, and dilution

Unit 2

Solute

Aqueous Soltion

Expected Change

Universal Solvent

Chemical Change

Solvent

Heterogenous mixture

Physical Change

Homogenous mixture

Physical Change

A change altering the form or appearance of matter, but not turning any substance into a different substance.

Chemical Change

A change in matter in which one or more new substances form.

Expected Change

A change that yields a predictable and standard result.

Heterogenous mixture

A mixture that is not the same throughout.

Homogenous mixture

A mixture that is the same throughout.

Aqueous Solution

A type of homogeneous mixture with a major substance being water. Water is always the solvent.

Solvent

A type of homogeneous mixture with a major substance being water. Water is always the solvent.

Universal Solvent

A solvent that can dissolve a great quantity of substances; water.

Solute

The substance that is being dissolved in the solvent. This component may be in the form of a solid, liquid, or a gas.

Solution

A homogeneous type of mixture of two or more substances. A solution has two parts: a solute and a solvent.

Concentration

The amount of solute dissolved in a set amount of the solvent.

Dilution

The act of decreasing the concentration of a solution. This can occur by adding solvent or removing solute, or both.

Rate of Dissolution

The speed at which a solute dissolves in a solvent.

Agitation

To stir or shake a solution; can increase the rate of dissolution.

Surface Area

The amount of space present on the surface of a material. Increasing the surface area can increase the rate of dissolution.

Temperature

The amount of heat present; increasing the temperature can increase the rate of dissolution.